凹面

In the cylindrical worm pair with disk annular grinding wheel enveloped worm, the worm axial profile is concave profile.

圆弧面砂轮包络圆柱蜗杆传动，兼备了二次包络成形的特征和凹面齿圆柱蜗杆的特征，是一种很有特色的新型圆柱蜗杆传动。

Divot A piece of turf removed with by the club when making a shot. It is always replaced and tamped down.

D- 球表面的凹面：高尔夫球表面经科学设计的圆形凹处，能使球进行正确稳定的飞行。

Therefore this imaging system can realize two kinds of X-ray radiology: reverse geometry X-ray and X-Scan imaging, and several CT scanning methods, such as equiangular fan-beam CT, equispatial fan-beam CT, helical/spiral CT, cone-beam CT with circle orbit, cone-beam CT with circle-plus-line orbit.

这样就可以实现倒置结构的X射线成像方法、等角扇束的扫描方法，以及本文所提出的凹面源加点探测器的锥形束扫描方法，而且还避免了使用成组点探测器带来的性能不一致性。

During the simulation, themost important problem is to compute the geodesic distance as fast and exactly as possible. We modify the approximating method and make it work for the concave andmultiple sources.

在这个模拟方法中，使用了改进的近似快速计算三角网格上测地距离的方法，使之能处理凹面及多源点的情况。

Compacted with typical spectrometers as Ebert-Fastie spectrometer, Czerny-Turner spectrometer and Aberration corrected concave holographic grating spectrometer, we are going to do detail research especially on their working theory, structural parameters and function, such as the source of stray light, the analysis of signal to noise ratio, the placing of detector, aberration's theory, aberration's caculation and it's elimination.

结合比较典型的Ebert-Fastie型光谱仪、Czerny-Turner型光谱仪及凹面像差校正全息光栅光谱仪进行了详细分析，尤其对它们的工作原理、结构参数和性能指标进行了深入分析，如杂散光的来源、信噪比的分析及其改善方法、探测器的置放、像差理论、像差计算及其消除的办法。

The crystal structures of hagfish variable lymphocyte receptor monomers indicate that they adopt a horseshoe-shaped structure and likely bind antigens through the hypervariable concave surface.

晶体衍射分析发现，盲鳗的VLRs呈现一种"马蹄"型结构，抗原结合位点则位于"马蹄"的凹面区。

Concave reflecting surfaces of spherical cap, paraboloid and hyperboloid of revolution are investigated with regard to the dependence of the levitation force on the section radius Rb and curvature radius R of the reflector.

针对球面、旋转抛物面和旋转双曲面三种形状的凹面反射端，系统研究了悬浮力与反射端截面半径R_b和曲率半径R之间的本征关系。

Among the three concave reflecting surfaces, namely, a spherical cap, a paraboloid and a hyperboloid of revolution, the enhancement degree of FM for a spherical reflector is the largest.

在球面、旋转抛物面和旋转双曲面三种类型的凹面反射端中，采用球面反射端通过上述方式提高悬浮力，可以获得最佳效果。

Based on the electron gun of SDS-3 electron beam lithography machine,the concave hyperboloid Wehnelt(oxide-coated cover)of accelerator is discussed.

以SDS-3电子束设备的电子枪为基础，讨论了双曲凹面加速器维纳尔的电子轨迹与能量分布。

The interface between the lung and the effusion is usually concave medially and is termed a meniscus.

肺和流出之间的接口通常凹面中间和被命名半月板。

I'm strongly against the death penalty — it's an eye for an eye.

我不赞成死刑——这是以牙还牙的报复行为。

And to get you the support you need, we're enlisting all elements of our national power: our diplomacy and development, our economic might and our moral suasion, so that you and the rest of our military do not bear the burden of our security alone.

并给你们所须的支援，我们正徵召国家所有各种的力量：我们的外交及发展，我们的经济力量与道德劝说，所以你们与其他军人不须要孤独地负起国家安全的责任。